org.apache.xerces.impl.xs.identity
Class XPathMatcher

java.lang.Object
  |
  +--org.apache.xerces.impl.xs.identity.XPathMatcher

Direct Known Subclasses:

Field.Matcher, Selector.Matcher

public class XPathMatcher

extends java.lang.Object

XPath matcher.

INTERNAL:

Usage of this class is not supported. It may be altered or removed at any time.

Version:

$Id: XPathMatcher.java,v 1.26 2005/05/09 21:03:33 ankitp Exp $

Author:

Andy Clark, IBM

Field Summary

protected static boolean	DEBUG_ALL Compile to true to debug everything.
protected static boolean	DEBUG_ANY Don't touch this value unless you add more debug constants.
protected static boolean	DEBUG_MATCH Compile to true to debug match.
protected static boolean	DEBUG_METHODS Compile to true to debug method callbacks.
protected static boolean	DEBUG_METHODS2 Compile to true to debug important method callbacks.
protected static boolean	DEBUG_METHODS3 Compile to true to debug the really important methods.
protected static boolean	DEBUG_STACK Compile to true to debug step index stack.
protected java.lang.Object	fMatchedString The matching string.
protected static int	MATCHED
protected static int	MATCHED_ATTRIBUTE
protected static int	MATCHED_DESCENDANT
protected static int	MATCHED_DESCENDANT_PREVIOUS

Constructor Summary

XPathMatcher(XPath xpath)
Constructs an XPath matcher that implements a document fragment handler.

Method Summary

void	endElement(org.apache.xerces.xni.QName element, org.apache.xerces.xs.XSTypeDefinition type, boolean nillable, java.lang.Object value, short valueType, org.apache.xerces.xs.ShortList itemValueType)
protected void	handleContent(org.apache.xerces.xs.XSTypeDefinition type, boolean nillable, java.lang.Object value, short valueType, org.apache.xerces.xs.ShortList itemValueType)
boolean	isMatched() Returns value of first member of fMatched that is nonzero.
protected void	matched(java.lang.Object actualValue, short valueType, org.apache.xerces.xs.ShortList itemValueType, boolean isNil) This method is called when the XPath handler matches the XPath expression.
void	startDocumentFragment() The start of the document fragment.
void	startElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.XMLAttributes attributes) The start of an element.
java.lang.String	toString() Returns a string representation of this object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

DEBUG_ALL

protected static final boolean DEBUG_ALL

Compile to true to debug everything.

DEBUG_METHODS

protected static final boolean DEBUG_METHODS

Compile to true to debug method callbacks.

DEBUG_METHODS2

protected static final boolean DEBUG_METHODS2

Compile to true to debug important method callbacks.

DEBUG_METHODS3

protected static final boolean DEBUG_METHODS3

Compile to true to debug the really important methods.

DEBUG_MATCH

protected static final boolean DEBUG_MATCH

Compile to true to debug match.

DEBUG_STACK

protected static final boolean DEBUG_STACK

Compile to true to debug step index stack.

DEBUG_ANY

protected static final boolean DEBUG_ANY

Don't touch this value unless you add more debug constants.

MATCHED

protected static final int MATCHED

MATCHED_ATTRIBUTE

protected static final int MATCHED_ATTRIBUTE

MATCHED_DESCENDANT

protected static final int MATCHED_DESCENDANT

MATCHED_DESCENDANT_PREVIOUS

protected static final int MATCHED_DESCENDANT_PREVIOUS

fMatchedString

protected java.lang.Object fMatchedString

The matching string.

Constructor Detail

XPathMatcher

public XPathMatcher(XPath xpath)

Constructs an XPath matcher that implements a document fragment handler.

Parameters:

xpath - The xpath.

Method Detail

isMatched

public boolean isMatched()

Returns value of first member of fMatched that is nonzero.

handleContent

protected void handleContent(org.apache.xerces.xs.XSTypeDefinition type,
                             boolean nillable,
                             java.lang.Object value,
                             short valueType,
                             org.apache.xerces.xs.ShortList itemValueType)

matched

protected void matched(java.lang.Object actualValue,
                       short valueType,
                       org.apache.xerces.xs.ShortList itemValueType,
                       boolean isNil)

This method is called when the XPath handler matches the XPath expression. Subclasses can override this method to provide default handling upon a match.

startDocumentFragment

public void startDocumentFragment()

The start of the document fragment.

startElement

public void startElement(org.apache.xerces.xni.QName element,
                         org.apache.xerces.xni.XMLAttributes attributes)

The start of an element. If the document specifies the start element by using an empty tag, then the startElement method will immediately be followed by the endElement method, with no intervening methods.

Parameters:

element - The name of the element.

attributes - The element attributes.

Throws:

org.xml.sax.SAXException - Thrown by handler to signal an error.

endElement

public void endElement(org.apache.xerces.xni.QName element,
                       org.apache.xerces.xs.XSTypeDefinition type,
                       boolean nillable,
                       java.lang.Object value,
                       short valueType,
                       org.apache.xerces.xs.ShortList itemValueType)

Parameters:

element - name of the element.

type - content type of this element. IOW, the XML schema type of the value. Note that this may not be the type declared in the element declaration, but it is "the actual type". For example, if the XML is <foo xsi:type="xs:string">aaa</foo>, this parameter will be "xs:string".

nillable - - nillable true if the element declaration is nillable.

value - - actual value the typed value of the content of this element.

toString

public java.lang.String toString()

Returns a string representation of this object.

Overrides:

toString in class java.lang.Object